Gaya APA

Welt, G, D. (1994). Simple Thin-Layer Chromatographic Identifikation Of Active Ingredients In Essential Drugs . Germany: ECV.

Gaya MLA

Welt, Gesundheitseitshilfe, Dritte. "Simple Thin-Layer Chromatographic Identifikation Of Active Ingredients In Essential Drugs". Germany: ECV, 1994. Text.